【摘要】 以钛酸丁酯为钛源,采用溶胶-凝胶法制备了Cu2+、Zn2+共掺杂TiO2薄膜,通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、X射线光电子能谱(XPS)、紫外可见吸收光谱(UV-Vis)对其进行表征。结果表明,Cu2+、Zn2+掺杂促进了TiO2晶相的转变,引入铜锌离子之后TiO2的禁带宽度由3.37eV减少至3.28eV。SEM表明Cu2+、Zn2+共掺杂TiO2薄膜晶粒比纯TiO2更加细小。XPS分析证实了制备的铜锌共掺杂TiO2,锌以二价氧化价态存在。以亚甲基蓝为模拟污染物,对其进行光催化降解实验,结果表明:Cu2+、Zn2+共掺杂的协同作用使TiO2薄膜的光催化活性显著提高。更多还原

【Abstract】 Cu2 +and Zn2 +co-doped TiO2 thin film has been prepared by Sol-gel using tetrabutyl titanate.The properties were characterized by using X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),UV-Vis absorption spectroscopy.The results indicate that Cu2 +and Zn2 +co-doped promotes transformation of the TiO2 crystal phase and the band gap decreases from 3.37eV to 3.28eV.SEM showed that the grain size of the Cu2 +and Zn2 +doped TiO2 thin film is more smaller than that of the pure TiO2.The analysis of XPS proved that Zinc exists as bivalent oxidation valence state in Cu2 +and Zn2 +co-doped TiO2 thin film prepared.The Methylene Blue as simulated pollutants has been used in the photocatalytic degradation experiment.The results indicates that the Photocatalytic Activity of co-doped TiO2 thin film has been developed significantly because of the synergistic effect of Cu2 +and Zn2 +codoping.更多还原